EP0320969A3 - Oscillation circuit - Google Patents

Oscillation circuit Download PDF

Info

Publication number: EP0320969A3
Authority: EP; European Patent Office
Prior art keywords: oscillation circuit; oscillation; circuit
Prior art date: 1987-12-18
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Granted

Application number

EP88121112A

Other versions

EP0320969B1 (en

EP0320969A2 (en

Inventor

Kazuhisa Sakihama

Takuya Fujimoto

Akihiro Sueda

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Toshiba Corp

Original Assignee

Toshiba Corp

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1987-12-18

Filing date

1988-12-16

Publication date

1990-07-11

1988-12-16 Application filed by Toshiba Corp filed Critical Toshiba Corp

1989-06-21 Publication of EP0320969A2 publication Critical patent/EP0320969A2/en

1990-07-11 Publication of EP0320969A3 publication Critical patent/EP0320969A3/en

1993-05-05 Application granted granted Critical

1993-05-05 Publication of EP0320969B1 publication Critical patent/EP0320969B1/en

2008-12-16 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

230000010355 oscillation Effects 0.000 title 1

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/36—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being semiconductor device
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/01—Details
- H03K3/014—Modifications of generator to ensure starting of oscillations
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/03—Astable circuits
- H03K3/0307—Stabilisation of output, e.g. using crystal

Landscapes

Chemical & Material Sciences (AREA)
Crystallography & Structural Chemistry (AREA)
Oscillators With Electromechanical Resonators (AREA)

EP88121112A 1987-12-18 1988-12-16 Oscillation circuit Expired - Lifetime EP0320969B1 (en)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP62320424A JP2573266B2 (en)	1987-12-18	1987-12-18	Oscillation circuit
JP320424/87		1987-12-18

Publications (3)

Publication Number	Publication Date
EP0320969A2 EP0320969A2 (en)	1989-06-21
EP0320969A3 true EP0320969A3 (en)	1990-07-11
EP0320969B1 EP0320969B1 (en)	1993-05-05

Family

ID=18121303

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP88121112A Expired - Lifetime EP0320969B1 (en)	1987-12-18	1988-12-16	Oscillation circuit

Country Status (6)

Country	Link
US (1)	US4918408A (en)
EP (1)	EP0320969B1 (en)
JP (1)	JP2573266B2 (en)
KR (1)	KR930001402B1 (en)
CA (1)	CA1307329C (en)
DE (1)	DE3880802T2 (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPH0372669A (en) *	1989-05-17	1991-03-27	Toshiba Corp	Semiconductor integrated circuit device and its manufacture
US5061906A (en) *	1989-07-28	1991-10-29	Fujitsu Limited	Voltage controlled oscillator using control transistors in a loop formed of inverters
AT393576B (en) *	1989-09-28	1991-11-11	Philips Nv	CIRCUIT FOR ELECTRONIC LEVEL CONTROL OF A SOUND SIGNAL
US5534826A (en) *	1994-10-24	1996-07-09	At&T Corp.	Oscillator with increased reliability start up
US5483205A (en) *	1995-01-09	1996-01-09	Texas Instruments Incorporated	Low power oscillator
JPH08204450A (en) *	1995-01-30	1996-08-09	Nec Corp	Semiconductor integrated circuit
JPH08330847A (en) *	1995-05-31	1996-12-13	Nec Corp	Oscillation circuit
US5552751A (en) *	1995-06-06	1996-09-03	Microchip Technology Inc.	Low voltage, low power oscillator having voltage level shifting circuit
US5696469A (en) *	1996-02-12	1997-12-09	Analog Devices, Inc.	Clock oscillator
JP2005136664A (en) *	2003-10-30	2005-05-26	Oki Electric Ind Co Ltd	Oscillation circuit
US7123109B2 (en) *	2004-12-15	2006-10-17	Intel Corporation	Crystal oscillator with variable bias generator and variable loop filter
WO2009052308A1 (en)	2007-10-17	2009-04-23	Roseman Neil S	Nlp-based content recommender
CN102255480B (en) *	2010-05-17	2014-12-03	登丰微电子股份有限公司	Power conversion device and pulse width modulation signal control device thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4282496A (en) *	1979-08-29	1981-08-04	Rca Corporation	Starting circuit for low power oscillator circuit
US4328571A (en) *	1979-09-07	1982-05-04	Texas Instruments Incorporated	Rapid start oscillator latch
US4613829A (en) *	1985-10-31	1986-09-23	Rca Corporation	Switchable oscillator circuit
US4704587A (en) *	1986-12-04	1987-11-03	Western Digital Corporation	Crystal oscillator circuit for fast reliable start-up

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5271964A (en) *	1975-12-11	1977-06-15	Matsushita Electric Ind Co Ltd	Crystal oscillator circuit
JPS54151357A (en) *	1978-05-19	1979-11-28	Seiko Instr & Electronics Ltd	Crystal oscillator for wrist watch
JPS57185706A (en) *	1981-05-11	1982-11-16	Ricoh Elemex Corp	Oscillation circuit

1987
- 1987-12-18 JP JP62320424A patent/JP2573266B2/en not_active Expired - Fee Related
1988
- 1988-12-15 US US07/284,524 patent/US4918408A/en not_active Expired - Fee Related
- 1988-12-16 EP EP88121112A patent/EP0320969B1/en not_active Expired - Lifetime
- 1988-12-16 DE DE8888121112T patent/DE3880802T2/en not_active Expired - Fee Related
- 1988-12-16 CA CA000586111A patent/CA1307329C/en not_active Expired - Lifetime
- 1988-12-17 KR KR1019880016874A patent/KR930001402B1/en not_active IP Right Cessation

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4282496A (en) *	1979-08-29	1981-08-04	Rca Corporation	Starting circuit for low power oscillator circuit
US4328571A (en) *	1979-09-07	1982-05-04	Texas Instruments Incorporated	Rapid start oscillator latch
US4613829A (en) *	1985-10-31	1986-09-23	Rca Corporation	Switchable oscillator circuit
US4704587A (en) *	1986-12-04	1987-11-03	Western Digital Corporation	Crystal oscillator circuit for fast reliable start-up

Also Published As

Publication number	Publication date
JPH01161906A (en)	1989-06-26
KR930001402B1 (en)	1993-02-27
DE3880802T2 (en)	1993-08-19
KR890011188A (en)	1989-08-14
CA1307329C (en)	1992-09-08
EP0320969B1 (en)	1993-05-05
US4918408A (en)	1990-04-17
JP2573266B2 (en)	1997-01-22
DE3880802D1 (en)	1993-06-09
EP0320969A2 (en)	1989-06-21

Legal Events

Date	Code	Title	Description
1989-05-06	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1989-06-21	17P	Request for examination filed	Effective date: 19890113
1989-06-21	AK	Designated contracting states	Kind code of ref document: A2 Designated state(s): DE FR GB IT
1990-05-23	PUAL	Search report despatched	Free format text: ORIGINAL CODE: 0009013
1990-07-11	AK	Designated contracting states	Kind code of ref document: A3 Designated state(s): DE FR GB IT
1992-01-22	17Q	First examination report despatched	Effective date: 19911210
1993-03-19	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1993-05-05	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): DE FR GB IT
1993-05-11	ITF	It: translation for a ep patent filed	Owner name: JACOBACCI CASETTA & PERANI S.P.A.
1993-06-09	REF	Corresponds to:	Ref document number: 3880802 Country of ref document: DE Date of ref document: 19930609
1993-08-13	ET	Fr: translation filed
1994-03-10	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1994-03-10	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1994-04-27	26N	No opposition filed
1997-12-08	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 19971208 Year of fee payment: 10
1997-12-09	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 19971209 Year of fee payment: 10
1997-12-22	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 19971222 Year of fee payment: 10
1998-12-16	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19981216
1999-08-04	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 19981216
1999-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19990831
1999-09-24	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
1999-10-01	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19991001
2006-12-31	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: IT Payment date: 20061231 Year of fee payment: 19
2009-08-31	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20071216

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